package com.sky.service.impl;

import com.alibaba.fastjson.JSONObject;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UserMapper;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

@Service
@Slf4j
public class UserServiceimpl implements UserService {
    /*
    * 微信服务接口地址
    * */
    private static final String WX_LOGIN_URL = "https://api.weixin.qq.com/sns/jscode2session";
    @Autowired
    private  WeChatProperties weChatProperties;
    @Autowired
    private UserMapper userMapper;

    public User wxLogin(UserLoginDTO userLoginDTO) {
        String openid = getOpenid(userLoginDTO.getCode());
        //判断openid是否为空，如果为空，则登录失败
        if(openid == null){
            log.error("微信服务调用失败");
            throw new LoginFailedException(MessageConstant.LOGIN_FAILED);
        }
        //通过openid查询用户是否为新用户
        User user = userMapper.getByOpenid(openid);
        if(user == null){
            user = User.builder()
                    .openid(openid)
                    .createTime(LocalDateTime.now())
                    .build();
            userMapper.insert(user);
        }
        //返回这个用户对象
        return user;

    }
    private String getOpenid(String code){
        Map<String,String> map = new HashMap<>();
        map.put("appid",weChatProperties.getAppid());
        map.put("secret",weChatProperties.getSecret());
        map.put("js_code",code);
        map.put("grant_type","authorization_code");
        String json = HttpClientUtil.doGet(WX_LOGIN_URL, map);
        log.info("微信服务返回的json数据：{}",json);
        JSONObject jsonObject = JSONObject.parseObject(json);
        String openid = jsonObject.getString("openid");
        return openid;
    }
}
